Not sure if this is baby moving or not.

I know the odds of feeling the baby move right now are against me at the moment. I'm a first time mom, overweight, and only 14w1d pregnant. But last weekend I experienced an odd sensation twice in two days. Both times I was sitting down, and I felt this little flutter. It happened so quickly that I couldn't really tell if it was just gas or anything else, but I've never had gas that felt like that! Nothing happened for a few days, and then last night as I was laying in bed and reading I felt a new sensation in the same area as the fluttering! It's really hard to describe. Almost like someone was dragging a finger along there, only internally. Or like the way it feels when you run your tongue across your cheek. I know those are kind of weird descriptions, lol, but it's the only way I can describe it. The coolest thing was that after it happened I poked my belly and it happened again! Both times it was very very light and brief, but definitely noticeable. Stronger than the fluttering, anyway. Just wondering if anyone else has had this, or if any second/third/fourth etc time moms know what it could be?